TABLE 1. Types of kinesis defined in lepidosaurs. Based mainly on Schwenk (2000), Metzger (2002) and Evans (2008).

	Type of kinesis	Action	Relevant joints potentially involved  or modified
	Metakinesis	Movement of the viscerocranium and dermatocranium relative to the braincase.	pterygoid-basisphenoid, parietal-supraoccipital, squamosal-opisthotic, epipterygoid-prootic, epipterygoid-parietal
	Streptostyly	Anteroposterior movements of the quadrate relative to the rest of the skull.	quadrate-squamosal, quadrate-pterygoid, quadrate-supratemporal, quadrate(quadratojugal)-jugal quadrate-quadratojugal
	Pleurokinesis	Mediolateral movements of the quadrate relative to the rest of the skull.	quadrate-squamosal, quadrate-pterygoid, quadrate-supratemporal, quadrate(quadratojugal)-jugal quadrate-quadratojugal
	Mesokinesis	Dorsoventral flexion of the skull roof (probably not possible without hypokinesis).	frontal-parietal, frontal-postfrontal, postfrontal-postorbital, frontal-postorbital, and also other joints of the dermatocranium such as the ectopterygoid-pterygoid
	Hypokinesis	Dorsoventral flexion of the palate (probably not possibly without mesokinesis).	palatine-pterygoid suture, ectopterygoid suture,
	Amphikinesis	Mesokinesis and metakinesis.	As listed above for mesokinesis and metakinesis